Yesterday I went to get my car tuned. bone stock integra ls, made 175whp and 170 torque. This was after i swapped my ramhorn manifold to a log. Before the old setup would hold 7psi all the way to redline! :/

The problem is that right when I hit full boost (7lbs) at about 4500ish rpm the boost drops off to about 3/4 psi. Could it be my wastegate malfunctioning??

The turbo is a garrett t3 42/48.